No meetings due to presentation of research in China - October 23rd through November 27th, 2023
"Probing Exciton Polaritons in van der Waals Materials with Electron Beams" - October 16th, 2023
Prof. Nahid Talebi Sarvari
Institute for Experimental and Applied Physics, Christian Albrechts University in Kiel, Germany
"Dynamic Renormalisation of the Spin Hamiltonian via Nonlinear Magnonics" - October 9th, 2023
Dr. Davide Bossini
Department of Physics, University of Konstanz, Germany
"Circular Photogalvanic Effects in Quantum Materials" - October 2nd, 2023
Dr. Qiong Ma
Department of Physics, Boston College
"Terahertz Field-induced Mestastable Magnetization Near Criticality in FePS3" - September 25th, 2023
Mr. Batyr Ilyas
Department of Physics, Massachusetts Institute of Technology
"Formation of Moiré Interlayer Excitons in Space and Time" - September 18th, 2023
Dr. Marcel Reutzel
I. Physical Institute, University of Göttingen, Germany
"Photoemission Orbital Tomography of electrons and Holes & Towards Ultrafast 3D Orbital Imaging" - September 11th, 2023
Dr. Matthijs Jansen
I. Physical Institute, University of Göttingen, Germany
"No talk scheduled due to Labor Day Holiday" - September 4th, 2023
"On Surface Behaviors of N-neterocyclic Carbene" - August 28th, 2023
Dr. Jindong Ren
CAS Key Laboratory of Nanophotonic Materials and Devices, Beijing
"Ultrafast XUV and Raman Spectroscopy to Elucidate Electron and Lattice Dynamics" - August 21st, 2023
Dr. Somnath Biswas
Department of Chemistry, University of Washington, Seattle
"Tutorial: Nanoscale Terahertz Scanning Probe Microscopy" - August 14th, 2023
Dr. Tyler Cocker
Assistant Professor, Department of Physics and Astronomy, Michigan State University
"Quantum Tomography of Light-Controlled Superconductivity" - August 7th, 2023
Dr. Ilias Perakis
Professor and Department Chair, Department of Physics University of Alabama at Birmingham
"Geometry and Topology of ZrTe5" - May 30, 2023
Mr. Boqun Song
Ames National Laboratory and Iowa State University
"Light Switching of Topological Phases by Symmetry-Selective Coherent Phonons" - May 30, 2023
Dr. Liang Luo
Ames National Laboratory and Iowa State University
"Real Space Imaging Single Molecule Chemistry at Single-Bond Limit" - May 22, 2023
Mr. Xiang Zhu
University of Science and Technology of China, China
Plasmon Polaritons" - May 15, 2023
Mr. Pascal Dreher
Faculty of Physics, University of Duisburg-Essen
"Anatomically Precise Gold Nanoclusters" - May 8, 2023
Dr. Rongchao Jin
Professor, Department of Chemistry, Carnegie Mellon University
"Visualizing Electron-Phonon Coupling in Momentum and Time with Ultrafast Electron Diffuse Scattering" - May 1, 2023
Dr. Bradley J. Siwick
Associate Professor, Department of Physics and Department of Chemistry, McGill University
"Quantum Metric Plasmons in Narrow Bands" - April 24, 2023
Justin C. W. Song
Division of Physics and Applied Physics, Nanyang Technological University, Singapore
"No talk scheduled" - April 17, 2023
"No talk scheduled due to Easter Holiday" - April 10, 2023
"Ultrafast coherent spectroscopy of photocatalytic TiO2 surfaces" - April 3, 2023
Ms. Namitha Ann James
University of Pittsburgh
"Nonequilibrium engineering of topological flat bands" - March 27, 2023
Dr. Hang Liu
Songshan Lake Materials Laboratory, Chinese Academy of Sciences
"Coherent phonon dynamics in semiconductors" - March 20, 2023
Dr. Liang Guo
Assistant Professor, Department of Mechanical and Energy Engineering, Southern University of Science and Technology, China
"Time-resolved mPP study on bare and molecule covered Ag(111) surface” - March 13, 2023
Xintong Li
University of Science and Technology of China, China
"Optically Induced Rectification and Magnetization” - March 6, 2023
Assistant Professor, Department of Chemistry and Biochemistry, Utah State University
"Solid state nanostructures for plasmonics and quantum light emitters” - February 27, 2023
Assistant Professor, Department of Physics, SUNY at Buffalo
"The Spin Texture Topology of Polygonal Plasmon Fields” - January 23, 2023
Laboratory of Ultrafast Dynamics, Department of Physics & Astronomy, University of Pittsburgh
"Physical properties of atomic defects on titanium dioxide studied by scanning probe microscopy”
January 16, 2023
Institute for Molecular Science, Okazaki, Japan
"Light Field Control of Real and Virtual Charge Carriers" - January 9, 2023
Associate Professor, Departments of Chemistry and Physics, University of Rochester
January 2, 2023 - New Year's Day Holiday
December 26, 2022 - Christmas Holiday
"Attosecond chronoscopy of Bloch electrons" - December 19, 2022
Department of Physics, University of Regensburg, Germany
"Carbon nanotube Ultrafast Coherent Electron Source" - December 12, 2022
Qing Dai
National Center of Nanoscience and Technology, China
"Transient Wannier-Stark Localization in Solids" - December 5, 2022
Department Head, Department of Physics, University of Konstanz
"Fractionalization and entanglement of photoexcited charge in a Wigner crystal"
November 28, 2022
Jozef Stefan Institute, Ljubljana, Slovenia
"From Cloaks to Clocks – Photonics on Surfaces and Cold Atoms" - November 21, 2022
NIST (JILA) and University of Colorado, Boulder
"Multiphoton photoemission and Floquet Dressing on Metal Surfaces" - November 14, 2022
PhD student (EPFL / Paul Scherrer Institute (PSI))
"Interferometric SHG Detection of Highorder Nonlinear Optical Responses in 2-D Material Heterostructures" - November 7, 2022
Professor of Chemistry, The Pennsylvania State University
"Elemental sd2 Dirc honeycomb calcene monolayer” - October 31, 2022
Department of Physics, University of Science and Technology of China, Hefei 230026, China
October 10, 2022 & October 24, 2002 - No talks while Dr. Petek scouts for speakers in Okinawa at the 14th International Symposium on Atomic Lever Characterizations for New Materials and Devices
"Optically probing the asymmetric interlayer coupling in rhombohedral-stacked MoS2 bilayer”
October 3, 2022
Postdoc, Stewart Blusson Quantum Matter Institute, The University of British Columbia
"Visualizing the water/oxide interface: from real-space to energy-momentum space"
September 26, 2022
University of Science and Technology of China (USTC)
"Theory and applications of atomically-resolved optical spectroscopy and microscopy in a scanning-tunneling microscope" - September 19, 2022
Institut des Sciences Moleculaires d'Orsay (ISMO), UMR 8214, CNRS, Universite Paris-Saclay, 91405 Orsay Cedex, France
Universite de Strasbourg, CNRS, IPCMS, UMR 7504, F-67000 Strasbourg, France
"Plasmon Engineering in Layered Materials" - September 12, 2022
Radboud University, Nijmegen, The Netherlands
September 5, 2022 - Labor Day Holiday
August 29, 2022 - Petek at QUTIF Colloquium (no seminar)
"Ultrafast nanophotonics for nonlinear optics applications and spectroscopy at the nanoscale"
August 22, 2022
Professor of Theoretical Condensed Matter Physics at The University of L'Aquila, Italy
"Emergent Functionality in Quantum Plasmonics" - August 15, 2022
Ultrafast Science - Attosecond Spectroscopy and Ultrafast Nanooptics, Universität Bielefeld, Germany
"nanoTIPTOE - field sampling in time and space” - August 8, 2022
Laboratory for Attosecond Physics, Physics Department, Ludwig-Maximilians-Universität Munich & Max Planck Institute for Quantum Optics
"On-surface chemistry of spatial molecules at the metal surface" - August 1, 2022
Tianjin University, China
June 27, 2022 to July 25, 2022 - Summer Holiday
"Direct Imaging of Exciton Coupling and Valley Polarization Dynamics in Monolayer WS2"
June 20, 2022
Dr. Alice Kunin
Department of Physics, SUNY, Stonybrook, NY
"We will rock you - Mode-selective optical control over a surface structural phase transition”
June 13, 2022
Max Planck Institute for Multidisciplinary Sciences
"Can we probe attosecond electronic screening physics with femtosecond light pulses?"
June 6, 2022
R. K. Mellon Professor, Laboratory of Ultrafast Dynamics, Department of Physics and Astronomy, University of Pittsburgh
May 16, 2022 & May 23, 2002 - No talks while Dr. Petek scouts for speakers in Holland and Spain
"Floquet engineering of Quantum Materials" - May 9, 2022
Prof. Takashi Oka
Functional Materials Group, Institute of Solid State Physics, The University of Tokyo, Kashiwa, Japan
"The Huygens Principle of Angle-Resolved Photoemission" - May 2, 2022
Experimental Physics 4, Julius-Maximilians-Universität, Physikalisches Institut
"Design of Novel Carbon Nanostructures via Surface Reactions” - April 25, 2022
University of Science and Technology of China
"Optical Skyrmions" - April 18, 2022
Senior Research Fellow, Nanophotonics & Metamaterials Group, Optoelectronics Research Centre, University of Southampton
"Ultrafast excitation of 4f orbital states - a new pathway to control magnetic order in metals"
April 11, 2022
Freie Universität Berlin, Institut für Experimentalphysik, AG Weinelt (Ultrafast Surface Dynamics)
"Probing Electron-Lattice Interactions in ZrTe5 with Ultrafast Electron Diffraction"
April 4, 2022
Postdoctoral Research Associate, National Synchrotron Light source-II, Brookhaven National Laboratory
"Ultrafast optical modulation of harmonic generation and laser melting" - March 28, 2022
The Institute for Physics, Chinese Academy of Science
"In situ metalation of porphyrins on metal and oxide surfaces” - March 21, 2022
Prof. Dr. Hans-Peter Steinrück
Chair of Physical Chemistry II, Friedrich-Alexander-Universität, Universität Erlangen-Nürnberg
"Probing Hot Electron Dynamics in Strongly Anharmonic Lattices with tr-ARPES"
March 14, 2022
Postdoctoral Scientist, Department of Chemistry, XYZ Group, Columbia University
"Spin photonics: From transverse spin to photonic chiral textures'' - March 7, 2022
Nanophotonics Centre, Shenzhen University
"Toward ultrafast control of Dirac electrons: photoexcitation & coherent phonons in topological semimetals"
February 28, 2022
College of Arts and Sciences, Santa Clara University, Santa Clara CA
"First-principles simulation of laser driven structural engineering" - February 21, 2022
State Key Laboratory for Surface Physics
The Institute of Physics, Chinese Academy of Sciences
"Tracing ultrafast hot electron and coherent phonon dynamics with STM” - February 14, 2022
Fritz Haber Institute
Department of Physical Chemistry
"Atomic chiral orbital Bose-Einstein condensates with topological excitations” - February 7, 2022
Professor of Physics, Department of Physics & Astronomy, University of Pittsburgh
"Multidimensional Multiphoton Momentum Microscopy of the Anisotropic Ag(110) Surface"
January 31, 2022
Doctoral Student in the Laboratory of Ultrafast Dynamics, Department of Physics & Astronomy, University of Pittsburgh
"When nanoparticles get hot" - January 24, 2022
CNR-SPIN Genova, Italy
"Transferring structure from light to currents for structured terahertz magnetic impulses"
January 17, 2022
Assistant Professor, School of Engineering Science, Simon Fraser University
Prior Affiliation (where the work is ongoing): Joint Attosecond Science Laboratory, Department of Physics, University of Ottawa
"Strain-induced one-dimensional electronic bands visualizing the strain in real space"
10:00 AM, January 3, 2022
Dr. Min Feng
Professor, Laboratory of Microscopic Surface Science, School of Physics and Technology, School of Physics and Technology, Wuhan University, Wuhan, China
December 27, 2021 - Christmas Holiday
"Introduction into Floquet theory based on periodically driven Dirac systems"
December 20, 2021
Institut fuer Theoretische Physik, Lehrstuhl Richter, Universitaet Regensburg
"Excitonic quantum interference in monolayer and twisted bilayer semiconductors"
December 13, 2021
Department of Physics, University of Regensburg, Germany
"Atomically probing molecular triplet lifetimes by electric pump-probe AFM"
December 6, 2021
Jascha Repp group, Institute of Experimental and Applied Physics, University of Regensburg
(Current affiliation) Graduate School of Pure and Applied Sciences, University of Tsukuba, Japan
"Charge transfer and exciton formation dynamics in TMDCs imaged by time-resolved momentum microscopy" - November 29, 2021
Philipps-Universität Marburg, Marburg, Germany
"Multiphoton Photoemission from the Layered Materials of Graphite, Black phosphorus and 2H-MoS2" - November 22, 2021
University of Science and Technology of China (USTC)
"Nanoimaging the 2D properties of black phosphorus" - November 15, 2021
Neubauer Family Assistant Professor, Department of Chemistry and James Franck Institute, The University of Chicago
“Ultrafast nanoscopy of collective excitations and interlayer charge transfer in van der Waals crystals” - November 8, 2021
Feodor-Lynen Fellow (Alexander von Humboldt Foundation)
and Postdoctoral Research Scientist at Columbia University
"Ultrafast electron dynamics in rutile TiO2(110)" - October 25, 2021
Laboratory of Ultrafast Dynamics, University of Pittsburgh
"Ultrafast carrier dynamics and transient band structure changes in fullerene thin films"
October 11, 2021
University of Kaiserslautern and Research Center OPTIMAS, Germany
University of Mainz, Germany
“Poincaré Engineering of Matter by Vectorial Optical Fields” - October 4, 2021
R. K. Mellon Professor, Laboratory of Ultrafast Dynamics, Department of Physics and Astronomy, University of Pittsburgh
"Plasmonic and Magnetic Dichroism Imaging of Magnetic Surfaces in Photoemission Electron Microscopy" - September 27, 2021
Institute of Physics, Martin-Luther-Universität Halle-Wittenberg
"Attosecond screening at the Giant Resonance of titanium" - September 20, 2021
Research Group Peter Baum, Universität Konstanz
"Non-Einsteinian Excitation of Electrons by Surface Plasmon Polaritons” - September 13, 2021
Technical University Kaiserslautern, Kaiserslautern, Germany
September 6, 2021 - Labor Day Holiday
"Charge dynamics at semiconductor surfaces investigated by time resolved Scanning Tunneling Microscopy" - August 30, 2021
4th Physical Institute – Solid State and Nanostructures, University of Göttingen, Germany
"Time-resolved second harmonic generation spectroscopy of Fe-porphyrin/Cu(001)"
August 23, 2021
University Duisburg-Essen, Faculty of Physics
"ARPES theory of graphene-based moiré superlattices and broken flavor-symmetry states in magic-angle twisted bilayer graphene (MATBG)" - August 16, 2021
Max Planck Institute for the Physics of Complex Systems, Dresden, Germany
August 9, 2021 - Summer Holiday
"Graphene growth and Modulation of the SHG in MoS2 by graphene" - August 2, 2021
Peking University/University of Pittsburgh
"Localized Spoof Plasmon Skyrmions with Topology Robustness and Extremely Subwavelength Footprint" - July 26, 2021
Institute of Photonics Technology Jinan University
July 5, 2021 - Independence Day Holiday
"Lightwave control of van der Waals quantum materials" - June 28, 2021
University of Regensburg, Germany
“Ultrafast transmission electron microscopy of a structural phase transition" - June 21, 2021
Georg-August-Universität Göttingen
“Topological excitations in 1D and 2D materials for topologically protected informatics”
June 14, 2021
Center for Artificial Low Dimensional Electronic Systems, POSTECH, Pohang, Korea
"A topological lattice of plasmonic merons" - June 7, 2021
University of Pittsburgh
May 31, 2021 - Memorial Day Holiday
"Quantitative sampling of atom-scale near-field waveforms" - May 24, 2021
University of Regensburg
"How to trap a charge carrier on molecule at TiO2 surface" - May 17, 2021
University of Southern California
"A window into the atomic world: Towards sub-cycle terahertz imaging of ultrafast electron dynamics on the atomic scale" - May 10, 2021
Michigan State University
"Time-resolved ARPES of Excitons in monolayer WSe2 - the dark side of the exciton and the traumatic sudden separation" - May 3, 2021
Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology
"Ultrafast screening of image potential electrons" - April 26, 2021
Columbia University
“Excitons and Polaritons in van der Waals Heterostructures" - April 19, 2021
Professor in Physics, University of Michigan, Ann Arbor, MI 48109
"Light field manipulation from classical to quantum based on both linear and nonlinear processes" - April 12, 2021
Associate Professor, School of Physics, University of Science and Technology of China
"Magic with Acoustic Metamaterials" - April 5, 2021
Division of Applied Physics, Hokkaido University
"Giant enhancement of optical nonlinearity in two-dimensional materials by multiphoton-excitation resonance energy transfer from quantum dots" - March 29, 2021
Peking University
"Towards Atomic-Scale Optical Spectroscopy" - March 22, 2021
Institute for Molecular Science, Japan, and Fritz-Haber Institute, Germany
"Tracing orbital images on ultrafast timescales" - March 15, 2021
Philipps-Universität Marburg, Marburg, Germany
"Cavity-Enhanced Ultrafast Spectroscopy" - March 8, 2021
Departments of Chemistry and Physics
"Tracking a single bond breaking with a joint STM-AFM-TERS strategy" - March 1, 2021
Professor, Hefei National Laboratory for Physical Sciences at the Microscale, USTC, China
"Tracking signatures of quantum geometry in time- and angle-resolved photoemission spectroscopy" - February 22, 2021
Alexander-von-Humboldt Fellow and postdoctoral research at Stanford University
"Dirac semimetals and their material predictions" - February 15, 2021
Institute of Physics, Chinese Academy of Sciences, Beijing
"Visualizing Charge and Spin Dynamics at Catalytic Interfaces" - February 8, 2021
Department of Chemistry and Biochemistry, Ohio State University
Co-Director, NSF NEXUS
"Engineering emergent states in quantum materials with classical and quantum light"
February 1, 2021
Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
"Optically induced intersite spin transfer in ferromagnetic alloys and compound systems"
January 25, 2021
I. Institute of Physics, University of Göttingen, Germany
"Electrodynamics and Non-reciprocal Photonics in Topological Quantum Matter"
January 18, 2021
John A. Paulson School of Engineering and Applied Sciences at Harvard University
”Nonlinear response of Dirac materials” - January 11, 2021
Assistant professor, Nordic Institute for Theoretical Physics(NORDITA)
"Shaping the Topology of Light on the Microscale" - December 21, 2020
OSA, APS Fellow, Professor of Electrical and Computer Engineering, Professor of Physics, Duke University
"Fourier optical preprocessing in lieu of deep learning” - December 14, 2020
Multimodal Optics Group, UC Riverside
“Multimodal probes of electron-phonon coupling in quantum materials” - December 7, 2020
SLAC National Accelerator Lab, Stanford University
"Hot-phonon physics in MgB2 triggered by anisotropic electron-phonon coupling”
November 30, 2020
Istituto di Struttura della Materia (CNR), Trieste Italy
November 23, 2020 - Thanksgiving Holiday - No seminar.
"Quantum Plasmonics: Going Beyond Freshman Physics" - November 16, 2020
R. K. Mellon Professor, Laboratory of Ultrafast Dynamics, Department of Physics and Astronomy, University of Pittsburgh
"Emerging order from real to imaginary time crystal" - November 9, 2020
Department of Physics & Astronomy, University of Pittsburgh
"Non-radiating anapole mode in optical metamaterials” - November 2, 2020
Assistant Professor, Department of Photonics, National Cheng Kung University
"Growth and Characterization of Group 2 metal honeycomb: Ca/Ag(111)"
October 26, 2020
Laboratory of Ultrafast Dynamics, Department of Physics & Astronomy, University of Pittsburgh
"Atomically precise graphene nanoribbons and heterojunctions: synthesis and properties"
October 19, 2020
Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China
"Deterministic control of an antiferromagnetic spin arrangement using ultrafast optical excitation"
October 12, 2020
Fritz-Haber Institute
”Plasmon-assisted channel of photoemission from metals" - October 5, 2020
Institute of Physics, Zagreb
"Uncovering the nature of magnetization dynamics and nonlinear optical phenomena in quantum materials"
September 28, 2020
Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM
"Nanoscale hyperspectral mapping by using photo-induced force microscopy”
September 21, 2020
Korea Research Institute of Standards and Science
"Optical Spectroscopy and Microscopy with a Scanning Tunneling Microscope"
September 14, 2020
Assistant Professor
Department of Chemistry and Biochemistry, University of California, San Diego
"Phase competition and photoinduced order in a charge density wave family" - August 31, 2020
Miller Fellow, Department of Chemistry, University of California, Berkeley
"Photoelectric effect with a twist" - August 24, 2020
Martin-Luther Universität Halle-Wittenberg, Halle (Saale), Germany
“Imaging of N2-K interactions at the atomic scale” - August 17, 2020
Laboratory of Ultrafast Dynamics, Department of Physics & Astronomy, University of Pittsburgh
"Visually constructing the chemical structure of a single molecule by scanning Raman picoscopy"
August 10, 2020
Hefei National Laboratory for Physical Sciences at the Microscale, USTC, China
[August 3, 2020, session cancelled because of family childbirth.]
"Large scale production and light induced dynamics of two dimensional semiconductors"
July 27, 2020
Department of Chemistry, Stanford University
"Multidimensional photoelectron spectroscopy of TMDCs with ultrafast XUV pulses: Driving ultrafast dynamical Lifshitz transition and probing hidden orbital-texture" - July 20, 2020
Structural & Electronic Surface Dynamics Group, FHI-Berlin
"Orbital Imaging: high-resolution molecular orbitals from photoelectron momentum microscopy"
July 13, 2020
Dr. Matthijs Jansen
I. Physikalisches Institut, Georg-August-Universitaet Goettingen
"Nonequilibrium Dynamics of Collective Excitations in Quantum Materials" - July 6, 2020
Department of Physics, Massachusetts Institute of Technology
"Recent developments on ab initio non-adiabatic molecular dynamics by real-time GW-BSE"
10:00 AM, June 29, 2020
Department of Physics, University of Science & Technology of China
"Manipulating quantum states by photoexcitation in 2D materials" - 10:00 AM, June 22, 2020
The Institute for Physics, Chinese Academy of Science
"Coupling free-electrons and whispering gallery modes" - June 15, 2020
4th Physical Institute and Institute for X-ray Physics, Georg-August-University of Göttingen
"Ultrafast terahertz microscopy: from near fields to single atoms" - 10:30 AM, June 8, 2020
Department of Physics and Astronomy, Michigan State University
"Topological Spin Textures in Plasmonic Vortices" - June 2, 2020
Postdoctoral Scientist, Department of Chemistry, XYZ Group, Columbia University
"A momentum-resolved view of phonon dynamics in black phosphorus" - May 25, 2020
Postdoctoral Researcher, Department of Physical Chemistry (Ernstorfer group)
Fritz-Haber Institute, Berlin, Germany
"Plasmonic Photoelectron Response of Low-Index Silver Surfaces" - May 18, 2020
Doctoral Student in the Laboratory of Ultrafast Dynamics, Department of Physics & Astronomy, University of Pittsburgh
"A New Bismuth Nanostructure: Toward Realization of Symmetry Guaranteed Dirac-Line under Strong Spin-Orbit Coupling" - May 11, 2020
Dr. Min Feng
Professor, Laboratory of Microscopic Surface Science, School of Physics and Technology, School of Physics and Technology, Wuhan University, Wuhan, China
"How to dress a metal" - May 4, 2020
Dr. Marcel Reutzal
Research Associate, Georg-August-University of Göttingen
"ZnO: Photodoping" - April 27, 2020
Lukas Gierster
Doctoral Student in Dr. Julia Stähler’s group, Fritz Haber Institute, Berlin, Germany
"Resonant charge transfer at molecule/substrate interfaces" - April 20th, 2020
Professor, Hefei National Laboratory for Physical Sciences at the Microscale, USTC, China.
In this spirit we open the
In 17th Century Europe, coffee beans imported from Ethiopia stimulated a new forum, coffee houses, for exchanging ideas on science and commerce with impacts that can still be felt today.
With COVID-19 our opportunities for one-to-one communication have been dramatically curtailed, but this disruption has provoked wireless communication spanning the globe.
International Ultrafast Knowledge Coffee House